clients/simple-dmabuf-drm: import with dmabuf modifiers

mesa's freedreno driver supports importing dmabufs with format
DRM_FORMAT_NV12 and DRM_FORMAT_MOD_SAMSUNG_64_32_TILE modifier.
demonstrate weston modifier advertising and import path using this
combination when run with --import-format=NV12.

v2:
 - hard code format if platform doesn't implement
   EGL_EXT_image_dma_buf_import_modifiers and cannot advertise
   format/modifier support.
 - squash using valid frame data to fill dmabuf planes

Signed-off-by: Varad Gautam <varad.gautam@collabora.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
diff --git a/Makefile.am b/Makefile.am
index 2a28548..e9679e6 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -625,7 +625,9 @@
 
 if BUILD_SIMPLE_DMABUF_DRM_CLIENT
 demo_clients += weston-simple-dmabuf-drm
-weston_simple_dmabuf_drm_SOURCES = clients/simple-dmabuf-drm.c
+weston_simple_dmabuf_drm_SOURCES =			\
+	clients/simple-dmabuf-drm.c			\
+	clients/simple-dmabuf-drm-data.h
 nodist_weston_simple_dmabuf_drm_SOURCES =		\
 	protocol/xdg-shell-unstable-v6-protocol.c		\
 	protocol/xdg-shell-unstable-v6-client-protocol.h	\